<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>vue计算属性的set和get</title>
</head>
<body>
    <div id="app">
        {{fullName}}
        {{age}}
    </div>
</body>
<script src="vue.js"></script>
<script>

    var vm = new Vue({
        el: '#app',
        data: {
            firstName: 'Dell',
            lastName: 'Lee',
            age: 24
        },
        computed: {
            fullName: {
                get: function() {
                    console.log('get 执行一次');
                    return  this.firstName +' '+ this.lastName;
                },
                set: function(value) {
                    console.log('set 执行一次:'+ value);
                    var arr = value.split(' ');
                    this.firstName = arr[0];
                    this.lastName = arr[1];
                }
            },
            now() {
                return Date.now(); 
            }
        },
    })
</script>
</html>